Dubnium: compound properties

Dubnium: history

Dubnium was discovered by Workers at the Nuclear Institute at Dubna, and the University of California, Berkeley, USA. in 1967 at USSR, United States. Origin of name: the origin of the name dubnium is the Joint Nuclear Institute at Dubna", an institute heavily involved in the search for heavy elements.

Dubnium: isotopes

Dubnium: isolation

Isolation: only very small amounts of of element 105, dubnium, have ever been made. The first samples were made through nuclear reactions involving fusion of an isotope of californium, 249Cf, with one of nitrogen, 14N. A second route to the same isotope via berkelium is also known

15N + 249Cf → 261105Db + 4 1n

16N + 249Bk → 261105Db + 4 1n

Isolation of an observable quantity of dubnium has never been achieved.